What is "diereses"

Diaeresis \Di*[ae]r"e*sis\, Dieresis \Di*er"e*sis\ (?; 277), n.; pl. Di[ae]reses or Diereses. [L. diaeresis, Gr. ?, fr. ? to divide; dia` through, asunder + ? to take. See Heresy.]

1. (Gram.) The separation or resolution of one syllable into two; -- the opposite of syn[ae]resis.

2. A mark consisting of two dots [[umlaut]], placed over the second of two adjacent vowels, to denote that they are to be pronounced as distinct letters; as, co["o]perate, a["e]rial.

n. (plural of dieresis English)

1. n. a diacritical mark (two dots) placed over a vowel in German to indicate a change in sound [syn: umlaut, diaeresis]

2. [also: diereses (pl)]

See dieresis